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Fig. 6. Spatial reorganization of the diencephalic and telencephalic compartments in relation to lateral splitting of retinal compartment. (A,D,G) Dorsal, (B,E,H) ventral and (C,F,I) lateral views of stage 16+, 18 and 19 embryos. (A-C) At stage 16+, retinal precursors form a single compartment overlying telencephalic and diencephalic compartment at their posterior and anterior halves. (D-F) Around stage 18, retinal precursors begin to split bilaterally starting from the posterior side, accompanied by intrusion of the anterior diencephalic compartment. (G-I) By stage 19, lateral splitting of retinal compartment is complete. (C,F,I) Lateral views demonstrating anterodorsal movement of the diencephalic compartment (white broken line) and dorsal movement of the telencephalic compartment (broken red line), relative to the retinal compartment. White lines indicate anterior and posterior limits of the retinal precursors. The white circle follows a single diencephalic precursor cell that moved in an anterior and dorsal direction (A,D,G). (C,F,I) The black arrows follow the anterior movement of a ventrally located diencephalic precursor cell. Scale bar: 100 µm.

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